Cohere: Rerank 4 Pro vs VoyageAI by MongoDB: rerank-3-lite
A side-by-side comparison of Cohere: Rerank 4 Pro (Free) and VoyageAI by MongoDB: rerank-3-lite (Free) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.
Specifications
| Cohere: Rerank 4 Pro | VoyageAI by MongoDB: rerank-3-lite | |
|---|---|---|
| Provider | Cohere | VoyageAI by MongoDB |
| Context window | 32,768 | 32,000 |
| Max output | 29,491 | 28,800 |
| Input | text | text |
| Output | rerank | rerank |
| Tool calling | ||
| Structured output | ||
| Reasoning control | ||
| Added | Apr 6, 2026 | Sep 30, 2026 |
Switch with one string
Both models use the same endpoint and request shape. Change the model value from "cohere/rerank-4-pro" to "mongodb/rerank-3-lite" and prompts, streaming and tools keep working.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api14.com/api/v1",
apiKey: process.env.API14_API_KEY,
});
const result = await client.post("/rerank", { body: {
"model": "mongodb/rerank-3-lite",
"query": "What is the capital of France?",
"documents": [
"Paris is the capital of France.",
"Berlin is in Germany."
],
"top_n": 1
} });
console.log(result.results);
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- Cohere: Rerank 5 Pro vs VoyageAI by MongoDB: rerank-3
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- VoyageAI by MongoDB: rerank-3 vs VoyageAI by MongoDB: rerank-3-lite